The Spotted Lanternfly has been declared an invasive species by the PA Agriculture dept.
You can find additional information here, and identification of the pest and it's eggs.
PA Dept of Agriculture - Spotted Lanternfly
You can find out if you are in a quarantine area by searching on this page.
The Spotted Lanternfly infests "Tree of Heaven". It lays egg masses on trees, outdoor furniture and structures.
At this time, The Harrisburg area isn't under quarantine, but Lancaster PA is under the quarantine.
Please report any sightings of this insect to the PA Dept of Agriculture.